import requests
from operator import itemgetter

url = 'https://hacker-news.firebaseio.com/v0/topstories.json'
r= requests.get(url)
print("Status code:", r.status_code)

submission_ids = r.json()
submission_dicts = []

for submission_id in submission_ids[:30]:
    url=('https://hacker-news.firebaseio.com/v0/item/' +
         str(submission_id) + '.json')
    submission_r = requests.get(url)
    print(submission_r.status_code)
    response_dict = submission_r.json()

    submission_dict ={
        'title':response_dict['title'],
        'link':'http:L//news.ycombinator.com/item?id=' + str(submission_id),
        'comments':response_dict.get('descendants',0)
    }
    submission_dicts.append(submission_dict)
submission_dicts = sorted(submission_dicts, key=itemgetter('comments'),reverse=True)

for submission_dict in submission_dicts:
    print('\nTitle:', submission_dict['title'])
    print("Discussion link:",submission_dict['link'])
    print("Comments:", submission_dict['comments'])